"And yet i would not sleep; merciful powers, restrain in me the cursèd thoughts that nature gives way to in repose" (2.1.7-9). This is Banquo complaining about his inability to sleep as a result of nightmares. This picture is an open eye, representing the inability to sleep because of what's inside the mind (depicted in the person within in the eye in this photo)
This could be good for advertising. This would be made into a little pop up bus with a theme of a holiday with details. only issue is cost? something that the brand struggle with. look into this though as novel/ different idea.